The high pressure cleaning spray gun is a standard configuration of a high pressure cleaning machine. The high-pressure water flow from the high-pressure cleaning machine passes through a high-pressure hose and then reaches the spray gun. When the spray gun is turned on, the high-pressure water flow will flow out of the spray gun, spray out through the nozzle, and spray onto the surface of the object to be cleaned to complete the cleaning operation. The spray gun is a switch in the high-pressure water flow pipeline system of the cleaning machine. It is a very important component. The important parameters of the spray gun are working pressure, working flow, and working temperature. The corresponding spray gun is matched according to the pump's performance to maximize its high-pressure pump performance and extend its service life. The spray gun is generally made of brass with a stainless steel inner core, which has good strength, strong corrosion resistance and stable quality.